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From:   Linus Torvalds <torvalds@linux-foundation.org>
Date:   Tue, 14 Jun 2022 12:00:22 -0700
Message-ID: <CAHk-=wgfFhwMP0=QQY_iZvf0kveR5=VGK919Ayn+ZSUADs9mag@mail.gmail.com>
Subject: Re: [PATCH 5.15 000/251] 5.15.47-rc2 review
To:     Thomas Backlund <tmb@tmb.nu>, Jan Kara <jack@suse.cz>,
        Suzuki K Poulose <suzuki.poulose@arm.com>
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Guenter Roeck <linux@roeck-us.net>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        stable <stable@vger.kernel.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Shuah Khan <shuah@kernel.org>, patches@kernelci.org,
        lkft-triage@lists.linaro.org, Pavel Machek <pavel@denx.de>,
        Jon Hunter <jonathanh@nvidia.com>,
        Florian Fainelli <f.fainelli@gmail.com>,
        Sudip Mukherjee <sudipm.mukherjee@gmail.com>,
        Slade Watkins <slade@sladewatkins.com>
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On Tue, Jun 14, 2022 at 11:51 AM Linus Torvalds
<torvalds@linux-foundation.org> wrote:
>
> Or just make sure that noop_backing_dev_info is fully initialized
> before it's used.

I don't see any real reason why that

    err = bdi_init(&noop_backing_dev_info);

couldn't just be done very early. Maybe as the first call in
driver_init(), before the whole devtmpfs_init() etc.

But I might be missing some dependency there.

              Linus